Electron Spin Resonance Study of BaFe2−x Mn x As2 Single Crystals

Huang, Hui; Tan, Min; Ji, Ping; Duan, Huimin; Gao, Xianhe; Hu, Xueyou

doi:10.1007/s10948-014-2840-5

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…Namely, there is no fractional flux plateau in their system. In previous studies on vortex states of TRSB superconductor it was discussed that vortex cores of different condensates can deviate from each other in space 39,[49][50][51][52] . However, without a closed path along which supercurrent is zero everywhere, there is no fractional flux plateau in the magnetization curve.…”

Section: Discussionmentioning

confidence: 99%

Fractional flux plateau in magnetization curve of multicomponent superconductor loop

Huang

2015

Phys. Rev. B

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Time-reversal symmetry (TRS) may be broken in superconductors with three or more condensates interacting repulsively, yielding two degenerate states specified by chirality of gap functions. We consider a loop of such superconductor with two halves occupied by the two states with opposite chiralities. Fractional flux plateaus are found in magnetization curve associated with free-energy minima, where the two domain walls between the two halves of loop accommodate different inter-component phase kinks leading to finite winding numbers around the loop only in a part of all condensates. Fractional flux plateaus form pairs related by the flux quantum Φ 0 = hc/2e, although they individually take arbitrary values depending on material parameters and temperature. This phenomenon is a clear evidence of TRS broken superconductivity, and in a general point of view it provides a novel chance to explore relative phase difference, phase kink and soliton in ubiquitous multi-component superconductivity such as that in iron pnicitides.

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Section: Discussionmentioning

confidence: 99%

Fractional flux plateau in magnetization curve of multicomponent superconductor loop

Huang

2015

Phys. Rev. B

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“…Regarding the latter scenario, Fe nitrides have attracted great interest [9][10][11][12][13]. One of the most intriguing Fe-N compounds, Fe 16 N 2 , has been the object of a sixty year-long debate about the magnetization of its α ordered phase.…”

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confidence: 99%

Searching for high magnetization density in bulk Fe: the new metastable Fe₆phase

Umemoto

Himmetoḡlu

Wang

et al. 2014

J. Phys.: Condens. Matter

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We report the discovery of a new allotrope of iron by first principles calculations. This phase has Pmn2(1) symmetry, a six-atom unit cell (hence the name Fe6), and the highest magnetization density (Ms) among all the known crystalline phases of iron. Obtained from the structural optimizations of the Fe3C-cementite crystal upon carbon removal, Pmn2(1) Fe6 is shown to result from the stabilization of a ferromagnetic FCC phase, further strained along the Bain path. Although metastable from 0 to 50 GPa, the new phase is more stable at low pressures than the other well-known HCP and FCC allotropes and smoothly transforms into the FCC phase under compression. If stabilized to room temperature, for example, by interstitial impurities, Fe6 could become the basis material for high Ms rare-earth-free permament magnets and high-impact applications such as light-weight electric engine rotors or high-density recording media. The new phase could also be key to explaining the enigmatic high Ms of Fe16N2, which is currently attracting intense research activity.

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Electron spin resonance in the superconducting state of Ba0.6K0.4Fe2As2

Dlamini¹,

Srinivasan²,

Ma³

2018

AIP Conference Proceedings

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Electron Spin Resonance Study of BaFe2−x Mn x As2 Single Crystals

Cited by 3 publications

References 25 publications

Fractional flux plateau in magnetization curve of multicomponent superconductor loop

Fractional flux plateau in magnetization curve of multicomponent superconductor loop

Searching for high magnetization density in bulk Fe: the new metastable Fe₆phase

Electron spin resonance in the superconducting state of Ba0.6K0.4Fe2As2

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Electron Spin Resonance Study of BaFe2−x Mn x As2 Single Crystals

Cited by 3 publications

References 25 publications

Fractional flux plateau in magnetization curve of multicomponent superconductor loop

Fractional flux plateau in magnetization curve of multicomponent superconductor loop

Searching for high magnetization density in bulk Fe: the new metastable Fe6phase

Electron spin resonance in the superconducting state of Ba0.6K0.4Fe2As2

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Product

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Searching for high magnetization density in bulk Fe: the new metastable Fe₆phase